Padlock



' Feb. 8, 11927;

J. P. ERRECALDE Filed July 14, 1924 2 Sheets-Sheet 1 m 9 Mm m M w z c H a a n E O r .v 0 10 m ceive a male coupling member on the other main part.- Theseparts 1 and 3-have ctr-- Patented Feb; 8, 1927.

JULIO PEDROERREGALDEQOFYLA ENsnNAnA, ARGENTINA.

rAnLocK.

Application filed July 14, 1924'. sefi rmi. 725,990.

"I The present invention relates to improvements in padlocks, its object being to. provide an extremely simple and efiici-ent device. of the class indicated which may have any of the several general uses of such devices andwhich is inexpensive to construct, inviolable and possesses m'any other practical advantages over those now in use.

Other and further improvementsand advantages involved inthe invention will ,become apparent in the course of the. following description, readin connection with the accompanying drawings, wherein:

. Figure 1 is aside elevation of a padlock embodying the invention;

Fig. 2 is a central vertical section; Figs 3 and 4 are opposite face views of one of the main parts or members; i

Fig. 5- is an end view of a rotatable barrel employed; V .Figs. 6 and 7 are, respectively, an end viewv and'a fragmental side View of a key for the padlock;

Fig. 8 is a central sectional view of a modification;

Figs. 9 and 10 show the mechanism disposed within one of. the main parts or members thereof; I a

Fig; 11 is a central sectional view of another modification; ,7 V Fig. 12 is a view showing the mechanism disposed within one of its main parts;. Figs. 13 and 14 areviews showing certain details relating to the plug or cover provided for the aforesaid part.

As shown in the drawings, the improved padlock comprises two main cylindrical parts 1 and 3, one of which is provided with a female coupling member, in the form of a hollow central extension or sleeve 2, to re.-

cumferential grooves 4 and '5 formed in their side walls, wherein metal rings and 3 7 are revolublyseated, said rings being suitablyconnected by means of a chain 8 or the like (Fig.1) to prev-enttheir loss. In the construction represented inv Figs.

2-4, the couplingsleeve 2 is made integral. q 'ith the part "1,.while the male coupling,

member is integral with the part? and consists of an externally threaded projection or lug 21 having an axial bore 22; the meme I bers 2 and 21 being releasably connected by an'intermediate rotatable barrel 15 which is formed with. a threaded bore 20 to receive member 21. The free outer end of sleeve 2 PIOJGCtS into .a recess formed. 11111116 inner face of'the part 3 and has a shoulder-or rabbet 9 at one portion ofits edge; therecesses in part 3 ,encirclingprojection21 and being shapedto correspond with the aforesaid sleeve end, as will be ui'iderstood from Fig. 2, and the outer end of the barrel 15 likewise extending intosaidrecess.

The part1 is hollowed or recessed to receive a plug or'blOckilOwhich is fastened in place therein by screws 11; and this plug is formed, in turn, with a central recess or chamber .12 whichalines withthe bore of sleeve 2 and opens atone end thereinto, and at the other end through .the outer face of theplug, the'latter opening being indicated ,at 13 (Figs. 2 and and havingitsv circuniferential wall provided 5 with inwardlyprojecting radial teeth lspaced at equal distances apart. The inner end'of the rotatable barrel15 extends "into chamber 12 and is held againstendwise movementby means 7 or a circumferential flange 16 (Figs; 2,;and

mg clamped in a 'seat formed in the inner face of the plug. 3? I l 5 g H As will be understood from the foregoing, the barrel l5-and the male coupling member or projection 21 are in threaded engagement,

the: first-named part fitting rotatably within tiv-e movement between the barrel and pro- JBGlllQIl is prevented by meansbf a tumbler 23 whichis slidably fitted in the bore 22 of the female coupling member or sleeve 2. In. the normal locked position of the parts, :relasaidprojectionand which embodies a fiattened portion 2 1 that extends into a seat 19 T formed'internally ofthe barrelat the inner end of its bore 20; a spring 27fin the forward portion of bore 22 serving to yieldably *hold thetumbler in such position, said tumbler' being guided during itssliding-move ments by a cross-pin 26 which is'mounted in the bore of the projection 21 and extends through a longitudinal slot 25 formed in the flattened portion 24 of the tumbler.

the key will thus force the tumbler rear-v wardly out of said seat. Adjacent pin 30,

Q the key is provided with a cylindrical portion 27 which is so shaped as to enable. it to be inserted through the plug opening 13, for which purpose its side wall has parallel grooves 28 to'receive the teeth 14; and immediately in front of this portion 27, the

7 key is additionally provided with a'set of radiating wards 29 to fit in correspondingly arranged grooves 17 in the barrel end, which grooves open at their inner ends into the hole 18, so-that besides releasing the tum- 'bler 23, the key serves to effect the rotation of the barrel. It is apparent, of course, that these operations can only be carried out by means of a key which is specially constructed to pass through the opening -13 and engage the barrel in the manner just described; but obviously a great number of different arrangements of the teeth 14 and the barrel grooves 17 is possible, so that a; different key can be provided for each of a group of padlocks it desired.

In the modification represented in Figs. 8- 10, the same main parts are employed, but the coupling sleeve 2 isshown as formed 011 the part 3, while the male coupling member is carried by the part 1 and consists of a pro ection or stud 35 which fits revolubly in the said sleeve and is provided with a convex or rounded outer end 37, immediately adjacent which a circumferential locking groove 36 is formed. The inner end of the stud carries an enlarged head34 which fits'revolubly in the chamber 33 in part1, said chamb'er being closed by a plug 31 securedin place therein by screws 32. v v The other main part 3 is'hollow, and has mounted withinit a pair of catches 38 and 39 (Fig. 9) which'are adapted to straddle the groove 36 and thereby prevent withdrawal of the stud. These catches are formed with tails 40 and 41 which extend across each other and then project downwardly in spaced, parallel relation; the catches being pivoted together at their point of overlap, indicatedat 42, which is below thepoint where they iengage'the stud groove, so that a suitable key can be. inserted through 'a hole 47in the back 46 of the part 3 and engaged between the tails 40 and 41, whereupon the rotation of the key will forge 11 tails away from each-other with the result that the catches are moved out of the, groove and unlock the stud. Normally, however, the catches areheld in looking engagement with the stud by means of springs 43 and 44, which are suitably held in place by a bracket 45 fastened to the chamber wall.

As a further security, the 'device shown in Fig. 10 may be employed, this device comprising a plate 49 pivoted within the part 3 in position to normally close the key-hole 47 and thus prevent the unlocking of the coupling stud. This plate or closure is acted on by a spring 51 which holds it against a stop 52 in the full-line, operative position illustrated in said figure, audit is movedinto its open, dotted-lineposition 49', in-which it abuts against a secondstop 56, by meansTof a separate key. 7 through a key-hole 48 and, on being turned, successively engages a pair of guides 55 and 5.3 and then hits against a lug'or tail 54 on the plate, the further movement otthe key forcing said plate to swing into, its dotted-line position, as will be understood.

are the same as those represented-in Figs. 810 and are designatedby the same numorals; the catches 38 and 39 being pivoted at points located one below theother and indicated at 57 and 58, adjacent which points they are provided with the key-en gaging lugs 59 and 60 to effect their separation. Asingle spring 61 is employed, in place of the two springs 43 and 44 shown in Fig. 9.

In this torm,the main part 3 is' hollow, and is provided with a plug or closure 62 formed with a substantially-rectangular diametral chamber 63 (Fig. 13) which, in turn. communicates at its upper end, by way of a hole 65, with anhlining recess 66 of less width than cha 1nber63. Access to thelatter is obtained by means of a lid 71 14) which fits in an opening in the front part The latter is inserted Q In the other modification, illustrated in Figs; 1114, many of the elements employed of plug 62 and is pivotally mounted therein atone end, as indicated at "2 (Fig. 11) and is provided adjacent its other end with an inwardly-directed finger .7 4 that extends into chamber 63 and is apertured to receive the end of a bolt 73; saidv bolt being slidably mounted in hole 65 and subjected tothe pressure of a s arm 7 5 arran ed in recess 66. I D I This bolt 73 must. of course. be released from finger 74 before lid 71 can be opened, and to effect such operation a master-key (not shown) is employed which is inserted through a hole inv the side wall of part 3' and engaged with said bolt.

i v The lid 71 is further provided with a diametral card-receiving space or seat 7 6 which. is intersected axially by a parallel slot 77, the latter being'torined entirely through the l d or e m r n er apert en o th car or seal visible from theoutside; thecard-being'inserted, of course, at the insideof'the lid when the latter isopent This card is designed to be puncturedfland partly sev ered when an attempt is made'to open'the padlock, so that such, .attempt will be.

evidenced by the condition of the card; and

to eflect this, a slide or block 67 is arranged in the chamber 63 and is provided with a cutter 69 (Fig. 11) that is designed to penetrate the card when lid 71 is closed; said block being normally held at the bottom of the chamber by the pressure imposed against it by a springYO located in said chamber. The key hole 68 is positioned at the bottom of the chamber, so that when the key is inserted therethrough to engage the lugs 59 and on the catches, it will force the block ahead of it, and the cutter 69 will sever the card as it moves along in the slot 7 7 I claim as my invention l A padlock, comprisingtwo companion, mam elements arranged in spaced relation.

7 one element being provided with an internal recess; lateral coupling sleeve throughwhich said projection is inserted and in which it rotatably fits, such sleeve being rigidly connected to 'oneof said main elements; and locking means carried by. the mainelement other than the one in which said recess is provided for removable engagement with said projection.

2. A padlock, comprising two hollow, main cylindrical elements, one element provided with a laterally-projecting coupling sleeve, and the'other with a lateral projection for insertion thereinto, said projection having a circumferential locking groove adjacent its outer end; a pair of coacting catches pivotally mounted in the interior of the first-named element; spring means for forcing said catches into engagement in said locking groove to prevent the withdrawal of the projection from the sleeve; and means for releasing the two catches simultaneously from such engagement.

3. A padlock, comprising two hollow, main cylindrical elements; a laterally-projecting coupling sleeve rigidly secured to one element; a lateral projection revolubly mounted in the other element for insertion into said sleeve, -said projection having a circumferential locking groove adjacent its outer end; a pair of coacting catches pivotally mounted in the interior of the firstnamed element for swinging movementinto and out of said groove; springmeans for yieldingly forcing said catches into the groove to prevent the withdrawal of said p i c i ii romat new; and r releasing the-two catches simultaneously.

4. A padlock, com rising transmit,"

main cylindi i'calelements, one element pro; vided with a laterally rojecting coupling sleeve, and the other it ha 'lateralprojeG tion 'foriiisert'ion thereinto',-said projection having a circumferential locking groove ad-" acent 1ts outer end; a pair of 'coactlng catches disposedin the interiorofjthe firstnamed element at opposite sides of said projection and mounted for pivotal movement into and out of said groove; and spring means for yieldingly forcing the catches toward each other to engage them in said groove and thereby prevent-the withdrawal of the projection from, said sleeve, said. catches having lugs for engagement by a key to spread them apart so as to disengage said projection. 5. A padlock,

vided with a laterally-projecting coupling sleeve, and the other with a lateral projection for insertion 'thereinto', said projection having a circumferential locking groove adjacent its outer end; a pair of coacting catches disposed inv the interior of the firstnamed element at opposite sides of said projection and pivotally mounted therein at points located one above the other for movement into and out. of said groove; and spring means for yieldingly forcing the catches toward each other to engage them in said groove and thereby .prevent the withcomprising two hollow, ,main cylindrical elements, one element prodrawal of the projection from said sleeve,

said catches being provided adjacent said pivot points with lugs for engagement by a .key to spread them apart so as to disengage said projection.

6. A padlock, comprising two companion, main elements arranged in spaced relation, each element being provided with'an internal recess and with a closure member se cured in the same; a laterally projecting coupling sleeve rigidly secured to one ele- I ment; a lateral projection inserted through 'said sleeve and rotatablyfitting therein, and having an enlarged head which is disposed in the recess inthe other main element and is capable of free rotation therein at all times, such head being clamped between the I confronting walls ofsaid recess and the corresponding closure member; and locking means carried by and. concealed wholly within the recess in the first-named element for removable engagement with said projecsleeve. 7 f I r 7. A padlock, comprising two hollow, main I cylindrical elements "tion to prevent its'withdrawal from said I spaced, parallel relation and formed with external circumferential grooves; alaterally-projecting coupling sleeve rigidly s ecured to one element; a lateral pro ection disposed in for insertion into said sleeve. having a head at one end hich is revolubly mounted in the to prevent the withdrawal of the projection from the sleeve; a ringrevolubly seated in each of said external grooves; and a flexible 10 element connecting said rings. 7

In testimony whereof I aflix my signature.

JULIO PEDRO ERRECALDE. V v i 

